Electronic whistle



FIG. 1 is a front elevational view of a electronic whistle showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top side view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of a electronic whistle showing my new design.

The broken lines in the figures are for the purposes of illustrating portions of the electronic whistle, which form no part of the claimed design 

CLAIM The ornamental design for a electronic whistle, as shown and described. 